Australia. Office of National Tourism. (1997). Ecotourism snapshot: A focus on recent market research. Office of National Tourism.
Chicago-referens (17:e uppl.)Australia. Office of National Tourism. Ecotourism Snapshot: A Focus on Recent Market Research. Canberra: Office of National Tourism, 1997.
MLA-referens (8:e uppl.)Australia. Office of National Tourism. Ecotourism Snapshot: A Focus on Recent Market Research. Office of National Tourism, 1997.
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